18984620841 has 16 divisors (see below), whose sum is σ = 26093021184. Its totient is φ = 12271351184.

The previous prime is 18984620819. The next prime is 18984620869. The reversal of 18984620841 is 14802648981.

It is a cyclic number.

It is not a de Polignac number, because 18984620841 - 2¹³ = 18984612649 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (18984620891) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 614085 + ... + 644258.

It is an arithmetic number, because the mean of its divisors is an integer number (1630813824).

Almost surely, 2^18984620841 is an apocalyptic number.

It is an amenable number.

18984620841 is a deficient number, since it is larger than the sum of its proper divisors (7108400343).

18984620841 is a wasteful number, since it uses less digits than its factorization.

18984620841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1258500.

The product of its (nonzero) digits is 884736, while the sum is 51.

The spelling of 18984620841 in words is "eighteen billion, nine hundred eighty-four million, six hundred twenty thousand, eight hundred forty-one".